package com.king.framework.config.properties;

import com.king.common.annotation.Anonymous;
import org.apache.commons.lang3.RegExUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.regex.Pattern;

@Configuration
public class PermitAllUrlProperties implements InitializingBean, ApplicationContextAware {

    private static final Pattern PATTERN = Pattern.compile("\\{(.*?)\\}");

    private ApplicationContext applicationContext;

    private List<String> urls = new ArrayList<>();

    public String ASTERISK = "*";

    @Override
    public void afterPropertiesSet() throws Exception {
        RequestMappingHandlerMapping mapping = applicationContext.getBean(RequestMappingHandlerMapping.class);
        Map<RequestMappingInfo, HandlerMethod> map = mapping.getHandlerMethods();
        Set<RequestMappingInfo> keySet = map.keySet();
        for(RequestMappingInfo key:keySet){
            HandlerMethod handlerMethod = map.get(key);
            // 获取方法上边的注解 替代path variable 为 *
            Anonymous annotation = AnnotationUtils.findAnnotation(handlerMethod.getMethod(), Anonymous.class);
            if(null != annotation){
                Set<String> patterns = key.getPatternsCondition().getPatterns();
                for(String url:patterns){
                    urls.add(RegExUtils.replaceAll(url,PATTERN,ASTERISK));
                }
            }
            // 获取类上边的注解, 替代path variable 为 *
            Anonymous controller = AnnotationUtils.findAnnotation(handlerMethod.getBeanType(), Anonymous.class);
            if(null != controller){
                Set<String> patterns = key.getPatternsCondition().getPatterns();
                for(String url:patterns){
                    urls.add(RegExUtils.replaceAll(url,PATTERN,ASTERISK));
                }
            }
        }

    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    public List<String> getUrls() {
        return urls;
    }

    public void setUrls(List<String> urls) {
        this.urls = urls;
    }
}
